John h



(No Modell.)

l J. H. STONBMETZ- y APPLIANGE POR MAKING STEREOTYPE PLATES;

. Rat'ented Apr. 1'7

UNITED STATES PATENT GEETCE.

JOHN H. STONEMETZ, OF ERIE, PENNSYLVANIA.

APPLIANCE FOR MAKING STEREOTYPE-PLATES.

SPECIFICATION forming part of Letters Patent No. 275,958, dated April 17, 1883.

Application filed Juno Q0, lt. (No model.) l

To all whom it may concern:

Be it known that I, JOHN H. SToNEMETz, a citizen ofthe United States, a resident ot' Erie, in the county of Erie and State of Pennsylvania, have invented new and useful Improvements in Appliances for Making Stereotype- Plates; and I do hereby declare that the l'ollowing is a full, clear, and exact description thereof, reference being had to the accompanying drawings and the letters or figures of reference marked thereon.

This invention relates to stereotypy; and it consists in providing a machine for carrying on said employment.

The object of my invention is to provide a machine whereon the entire work of making stereotype-plates may be performedin a rapid and economical manner.

My invention is illustrated in the accompanying drawing as follows: All the parts of the machine are fully shown by a perspective view of the machine, said parts being indicated by letters of reference as follows:

A A A, Sac., is the frame-work of the machine. B is the bed on which the type-forms rest while the matrix is being formed. C C' is the press for drying the matrix. D is the casting-box. F is the furnace for melting the metal. E is a rotary fan. c is a pipe connecting the fan with an air-space around the furnace between the plates fj". c is a pipe leading from said air-space t-o the matrix-press.

r.the construction and operation of my device is as follows:

The table B, on which the type-forms rest, is mounted on a sliding way, b b, and can be moved under the press C and back to the position shown at the will of the operator. The type lie upon this table face up, and the paper from which the matrix is to be formed is laid upon them in the usual manner, and the table is then moved under the press G. The press G is hung within a frame, A2, which is attached to the main frame-work A. It is operated by a hand-screw, C', in the usual manner. lt is made hollow, and is connected with pipes c c, by which it can be filled with steam or hot water, and thus kept hot. As it is necessary that the press G move but a short distance, it is not essential that the pipes c c be provided with joints to admit of this movement, as theywill spring sufficiently; but ifitis desired, the pipes may be properlyjointed to more with'the press.

Matrix-presses for stereotyping have been press hollow and heated by steam or hot water and the top or movable part of the press solid. The objection to this construction is that in order to dry the matrix the heat has to pass through the type before it reaches the paper matrix, and consequently the type have to be heated very hot, which injures them, and, besides, it requires considerable time to do the work, as the heat has to be communicated through the type. By my device the heat comes directly upon the paper matrix and does not have to pass through the type, the type become heated but very little, and the work can be done much more rapidly on account of this direct application ot' the heat. The

is of great importance, especially in newspaper work. To aid in the process of drying the matrix I provide a hot-air blast, to be so exerted as to pass between the typeshoulders and the matrix and drive out the vapor then generated and assist in the drying. This air-blast I obtain by the following con.- struction: The furnace F is provided with an outerjacket,f, which leaves an air-space between it and the body of the furnace. E is a fan or blower, which lis placed so as to be easily accessible by the operator when at` the press, and is connected by a pipe, e, with the furnace air-space. Another pipe, c', leads from this air-space to a pointdirectly opposite the side of the formswhen in the press, and is there provided with a line of perforations in position to direct the air upon the type just 'below the matrix. The air driven by the fan passes through the air-space of the furnace and then becomes heated, and thence passes through the pipe c! and the perforations therein upon the type and to and through the space between the shoulders of the type and the matrix, driving away any vapor that might form there, and thus aids in the drying.

from those commonly used. It is mounted pivot-all y upon two horns or arms, A A', on the end of the frame-work A, and can be set horisaving ot' time in the work ot'I stereotyping The casting-box D does not differ materially` made heretofore with the lower part of the l DO zontal to receive the matrix and turned on end to receive the molten metal, and again turned horizontal to allow ofthe removal of the plate when cast. In the drawing the casting-box is shown in full lines in position to receive the molten metal, and in dotted lines it is shown thrown open.

A3 is a case for tools and like articles, and is mounted on brackets al on the side of the machine.

S is a saw for trimming the plates, mounted in the frameA and operating through the top thereof.

S is a belt for driving the saw, which may connect with shafting below or upon the. floor.

What I claim as neuT is- 1. In an apparatus for making stereotypeplates, the combination, with the matrix-drying press, of' an air-pipe with openings arranged to force the air-blast against the type immediately below the matrix, substantially as and for the purposes mentioned.

2. lIn an apparatus for making stereotypeplates, the combination, with the matrix-drying press, of a pump for forcing air, a furnace for heating air, and a pipe for delivering the heated air upon the type while in said press,

substantially as and for the purposes set forth.

3. In an apparatus for making stereotypeplates, the combination, with the matrix-drying press, of the air-fan E, pipee, metal-melt ing furnace F, having a jacket forming an air-space, and the pipe e for delivering heated air upon the type while in press, substantially as and for the purposes mentioned.

4. In an apparatus for making stereotypeplates, the combination,substantially as shown, I

ot' the following elements: a matrix-drying press consisting of the laterally-moving typetable B, frame A2, screw C', and verticallymoving steam-heated pressing-plate C, cast-` 

